Igashira will be playing the heroine Sumire's daughter Sakura who is 15 years old. Furukawa will play Kentaro, the 15-year-old son of Murata Kimie (Tsuchimura Kaho) who manages the children's clothes store with Sumire. Morinaga will play Ryuichi, the 16-year-old son of Ozawa Ryoko (Momota Kanako) while Hayashi will play Kawai Jiro, a 19-year-old young man who meets the youngsters at the jazz cafe Yoosoroo where he works at while dreaming of becoming a drummer. Kubota will play Yamamoto Satsuki, a 16-year-old girl who behaves like an adult despite being just one year older than the youngsters and does not go to high school. Instead, she works part-time at Yoosoroo and watches over the rest like a big sister. Enami will play the role of Omura Suzu, the owner of Yoosoroo who lost her husband and son during the war and supports herself by managing the cafe. Nagase Tasuku will play Saijo Ichiro who is a new employee of Sumire's company. Although he is smart, he behaves badly when he's drunk. Last but not least, Mori Yusaku will play Nakanishi Naomasa who is another new employee at the children's clothes company.
This will be the first appearance in a morning drama for Igashira, Furukawa, Hayashi, Kubota, Nagase and Mori. Igashira and Furukawa will appear from the episode shown on 11 January 2017 while Morinaga, Hayashi, Kubota and Enami will appear from the following day. Nagase and Mori will appear from the episode on 13 January.